Weft-stop-motion mechanism for looms.



A. DHUYVETTERS.

WEFT STOP MOTION MECHANISM FOR ,LOOMS.

APPLICATION FILED NOV- I2, HHS,

Patented Sept. 26, 1916.

ATTORNEY UNITED STATES im'rnntr omen.

AUGlJ'ST DHUYVETTERS, 0F PATERSON, NEW JERSEY.

WEFT-STOP-MOTION MECHANISM FOR LOOMS.

Specification of Letters Patent. Patgnted Sept, 26 1916 Application filed November 12, 1915. Serial N 0. 61,006.

To all whom it may concern:

Be it known that I, AUoUs'r DHUYvn'rrisks, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in left-Stop- Motion Mechanisms for Looms, of which the following is a specification.

This invention consists in certain improvements in weft stop motions for looms of the class set forth in my U. S. Letters Patent No. 755,4l6t and has for its object to insure the stopping of the loom on each and every instance of failure of weft and in general to increase the efficiency of the mechanism.

In the accompanying drawing, Figure 1 is a plan view of the invention; Fig. 2 is a sectional view, looking toward the left in Fig. 1; Figs. 3 and 4 are sectional views on the lines wa" and g y of Fig. 6; Fig. 5 is a front elevation of a certain guide bracket; and, Fig. 6 is a front elevation of the batten and so much of the stopping mechanism as is attached thereto.

a is that part of the loom frame which forms the breast beam, on which at b is pivoted the lever 0 which is adapted when moved to release the controller cl, normally holding the power on the loom, from the notch c of the bracket f so that said controller will throw off the power.

Sliding in the brackets g and h attached to the batten a is the member 71 in the form of abar having to the right of the bracket 9 a concave shoulder j adjoined by the inclined surface or cam-way 70, which rises somewhat above the shoulder. The member 2' has at its left hand end a set screw Z which, when'the same is held opposite the lever c, is adapted as the batten beats up to engage and so move said lever to trip the controller e.

Member 2 is normally held to the right, in a position where the set-screw Z will not engage lever c, by spring on connecting it with the batten. It is drawn to the left, to a limit where said set-screw will be more or less to the left of lever c, by the strap a connecting said member with-the breast beam and preferably extending through bracket it around a roller thereon. 7

As the member 2' reciprocates, due to the alternately acting influences of the strap and spring its cam-way 7c impinges against the turned-off curved end or arm 19 of a rod 9 arranged to oscillate in the bracket 9 and a hole '0 in the arm.

The cam-way 7c and arm 79 present to each other convex surfaces (Figs. 3 and 6). operation, modified as hereinafter stated by the said convex surfaces of the cam-way 7c and arm 1) and by the weight afforded by wire t, is substantially the same as in my aforesaid patented mechanism. That is to say, each time the batten beats up the member i is drawn to its right-hand limit so that the set-screw Z clears lever 0, provided, however, there is no failure of weft, and each time the batten moves back said member is drawn to the left, its CaIII WZLY 7c elevating arm 72 and so raising the weft-fork for the passage of the shuttle. Should there be a failure of filling, the catch device including the fork 1' and shaft 9 will be free to wipe down the incline 70 until shoulder 7' is encountered, so that member z' will be locked in the position where the set-screw Z will be opposite and so engage lever c.

By forming the co-engaging surfaces of arm p and member 2' convex and by employing the weight 2, to exert an always constant downward pressure on the catch device and steady the action thereof the eflicicncy of the mechanism, especially in respect to effecting the stopping of the loom without fail in every instance of failure of weft, is greatly increased; the convex surfaces result in a movement of the catch device that is quick at first but gradually slows down, it being noted that the rod forming the axial part of the catch device is arranged in a vertical plane closer to that of the bar i having the cam-surface 70 than the lowest part of said surface is from the horizontal plane of the rod, so that the arm 79 is not thrown out of contact with cam-surface is by the impact therewith but, remaining in contact therewith, is therefore certain to impinge shoulder j if only failure of weft allows the arm to remain in contact with surface 70.

Having thus fully described my invention, what Lclaim as new and desire to secure by Letters Patent is 4 1. A stop motion mechanism of the class described including a horizontally sliding The member having a locking shoulder and adjoining said shoulder an inclined convex cam-Way, and alsoincluding a Weft-com trolled catch-device pivoted on a horizontal axis, the axial part of said device being a rocking rod arranged in a vertical plane closer to that of said cam-Way than the lowest part of said cam-Way is from the horizontal plane of the rod, said rod having one end bentofi and curved, its curved part overlying and presenting its convex side to said member and being engagea'ble by the locking shoulder and cam-Way of said member.

2. In combination, the loom frame, the moving batten, control means on the frame including a movable device tobe actuated,

a Weft-engaging catch movable on the batten and normally held against the Weft, a backand-forth moving member arranged on the batten and normally held out of but movable into position to engage and actuate said device, means, including a connection becatch to move. the same from the Weft, and

a gravity actuated- Weight pivotally attached to the batten and penetrating loosely said catch.

I'm-testimony whereof I afiix my signature.

AUGUST DHUYVETTERS.

Gopies of this patent may he obtained for five cents each,b v addressing-the Commissioner of Patents, Washington, D. 0.? 

